1. The origin of manganese ores in Ghana;Bates;Dir. Geol. Surv. Rep.,1958
2. Rate of concretion growth;Berner;Geochim. Cosmochim. Acta,1968
3. Composition of manganese nodules and manganese carbonates from Loch Fyne, Scotland;Calvert;Contrib. Mineral. Petrol.,1970
4. Shallow water, continental margin and lacustrine nodules: distribution and geochemistry;Calvert,1977
5. Solid-solution thermodynamics in CaCO3–MnCO3;Capobianco;Am. Mineral.,1987